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The characteristics of hydrogen adsorption on Li metal atoms dispersed on graphene with boron substitution were investigated for Li clustering, hydrogen bonding characteristics and open metal states of Li adatom by using density functional theory calculations. It is found that Li atoms are well dispersed on boron substituted graphene and can form the (2 ?? 2) pattern because clustering of Li atoms...
In this paper, relationship between transient response of conductivity of tin oxide gas sensor and hydrogen concentration is described. Transient response is caused with periodical temperature changes. Theoretical part is based on Langmuir theory of adsorption and barrier theory of semiconductor. The theory was experimentally proven.
In this study, the surface formation energy and electronic structure for the gas atom (H-, C-, or O-adatom) adsorbed on the Ga-terminated (0001 macr) surface in a condition of nitrogen vacancy were extensively investigated using ab initio calculations.
Summary form only given. We study the work functions of cathode surfaces with adsorbed atoms by using ab initio calculations. We used the standard slab geometry to model the surface systems. The tungsten (W) substrates are modeled by 5-layer slabs for the W (001) orientations. This provides one surface as well as bulk regions in all of the slab, which approximate the atomic structure encountered in...
Pt Schottky diodes were fabricated on n-InP by pulsed electrodeposition, and their H2 sensing properties were investigated. Deposition resulted in formation of Pt nanoparticles. As compared with diodes by vacuum deposition, electrodeposited diodes gave much higher Schottky barrier heights (SBHs) of 810 meV. They showed marked increase of the reverse current on exposure to H2 gas in air. The magnitudes...
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